| 激波干扰对发汗冷却影响的数值模拟研究 |
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| 引用本文： | 张红军,康宏琳.激波干扰对发汗冷却影响的数值模拟研究[J].宇航学报,2021,42(3):324-332. |
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| 作者姓名： | 张红军 康宏琳 |
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| 作者单位： | 北京空天技术研究所，北京 100074 |
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| 基金项目： | 国家自然科学基金（11802296）；装备预研领域基金（61402060301） |
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| 摘 要： | 基于宏观表征体元(REV)的数值模拟方法开展了激波干扰对异质发汗冷却影响的数值模拟研究，获得了外部激波干扰与引射气体边界层耦合相互作用流场特征。研究结果表明，不同冷却介质对于冷却效率有显著的影响，冷却介质比热容越大，相同注入率条件下的冷却效果更好；入射激波干扰会显著影响多孔材料表面的压力分布，使得多孔材料内部冷却介质会发生显著的横向流动，流动的重新分配使得处于高压区的干扰位置处的冷却效果降低；激波干扰引起的局部压力梯度还会使得高温主流与冷却介质掺混加剧，同时壁面的恢复温度也随之升高，显著影响激波干扰局部位置处的冷却效果。
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| 收稿时间： | 2020-02-26 |
Numerical Simulation Study on the Effects of Shock
WaveInterference on Transpiration Cooling |
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| ZHANG Hong jun,KANG Hong lin.Numerical Simulation Study on the Effects of Shock
WaveInterference on Transpiration Cooling[J].Journal of Astronautics,2021,42(3):324-332. |
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| Authors: | ZHANG Hong jun KANG Hong lin |
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| Affiliation: | Beijing Aerospace Technology Institute, Beijing
100074, China |
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| Abstract: | The shock wave interference on transpiration cooling
is investigated numerically based on the macro representative elementary volume
(REV) scale analysis method. The flow field characteristics of the shock
wave/transpiration boundary interaction are obtained. The results indicate that
different coolants have significant influence on the cooling efficiency. The
larger the specific heat capacity of the cooling media, the better the cooling
effect can be achieved under the same blowing ratio condition. The incident
shock wave interference can affect the pressure distribution on the material
surface, leading to obvious transverse flow of the coolant inside the porous
media. The redistribution of the coolant flow can remarkably reduce the cooling
effect of the shock wave interference location with higher pressure. The shock
wave can also enhance the mixing of the high temperature mainstream and cooling
media, and the wall recovery temperature can increase accordingly, weakening
the cooling performance obviously. |
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| Keywords: | Transpiration cooling Shock wave interference Porous media Numerical simulation |
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